After you have gained a certain amount of experience, this item will become uncharged. It will still function as normal equipment, but it will no longer give double experience. You can recharge it at the Stealing Creation reward shop for 20 points.

The stats of this item may have changed with a combat update, and have not yet been confirmed in-game. You can help the community by verifying the information in-game and then submit a report with your findings.